Alert archive / Delaware / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 20, NWS Philadelphia/Mount Holly

May 25, 1995Kent County, New Castle County, Delaware; Cecil County, Kent County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 25, 1995, 7:55 PM EDT for Kent County, New Castle County, Delaware; Cecil County, Kent County, Maryland. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
May 25, 1995, 7:55 PM EDT (23:55 UTC)
Expired
May 25, 1995, 8:33 PM EDT
In force
38 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.9 hours before the alert went out and 146 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 1995-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 1995-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
57 J/kg
Mixed-layer CIN
-250 J/kg
Mixed-layer LCL
1408 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPHL 252359
SVRPHL
DEC001-003-MDC015-029-260045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
755 PM EDT THU MAY 25 1995
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  DELAWARE
 
   ...NORTHERN KENT COUNTY...NEW CASTLE COUNTY
 
AND THE ADJACENT DELAWARE BAY COASTAL WATERS
 
 
IN  MARYLAND
 
   ...EASTERN CECIL COUNTY...EASTERN KENT COUNTY
 
AT 755 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A COMPLEX
OF SEVERE THUNDERSTORMS OVER NORTHEASTERN MARYLAND AND MOVING INTO
NORTHERN DELAWARE...MOVING EAST AT AROUND 20 MPH.
 
THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE WARNED AREA...PREPARE
FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN AND DEADLY
LIGHTNING.  SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE SHELTER
INDOORS...BUT DO NOT STAND NEAR WINDOWS.  MOBILE HOMES ARE MOST
VULNERABLE TO HIGH WINDS AND SHOULD BE AVOIDED.
 
REMEMBER TORNADOES CAN...AND SOMETIMES DO...FORM IN SEVERE THUNDERSTORM
AREAS.

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 6:59 PM EDTSevere Thunderstorm WarningPHICecil61 min

Nearby

Severe Thunderstorm Warnings in Delaware, 1995Severe Thunderstorm Warnings in Maryland, 1995Every severe thunderstorm warning in 1995

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.